Letter | Published:

Interferometric Observations of the Radio Source VRO 42 22 01

Nature volume 222, pages 967968 (07 June 1969) | Download Citation

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Abstract

SCHMITT1 has emphasized the outstandingly interesting properties of VRO 42 22 01 and its associated optical counterpart BL Lac2. Further interest has been aroused recently by the supposed detection of variable circular polarization at a frequency of 2,695 MHz (refs. 3 and 4). We have observed VRO 42 22 01 at various times and frequencies during 1968 with the interferometer of the Owens Valley Radio Observatory, always in conjunction with other programmes.

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References

  1. 1.

    , Nature, 218, 663 (1968).

  2. 2.

    , and , Astrophys. Lett., 1, 243 (1968).

  3. 3.

    , and , Nature, 219, 254 (1968).

  4. 4.

    , Astron. Astrophys. (in the press).

  5. 5.

    , Publ. Owens Valley Rad. Obs., 1 No. 3.

  6. 6.

    , and , Mon. Not. Roy. Astro. Soc., 135, 319 (1967).

  7. 7.

    , and , Astrophys. J. (in the press).

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Author information

Affiliations

  1. Owens Valley Radio Observatory, California Institute of Technology.

    • G. A. SEIELSTAD
    •  & K. B. YIP

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https://doi.org/10.1038/222967b0

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